What are the 4 nitrogen bases in a DNA nucleotide, and how to they pair together?

Which feature would you expect to find in a population in which sexual selection depends on male competition?

Which organism actively hunts other

Which of the following is an advantage of using embryonic stem cells in medical research? a. the use of embryonic stem cells is much less expensive than the use of adult stem cells. o b. no living tissue is damaged when scientists use embryonic stem cells. o c. embryonic stem cells are able to differentiate into a wider range of cells than adult stem cells. d. there is no controversy surrounding the use of embryonic stem cells.